Bis(4-cyano­phenolato)[hydro­tris­(3,5-dimethyl­pyrazol­yl)borato]nitro­syl­molybdenum(II)–4-hydroxy­benzonitrile–dichloro­methane (1/1/1)

In the title compound, [Mo(C15H22BN6)(C7H4NO)2(NO)]·C7H5NO·CH2Cl2, the central MoII atom adopts a distorted cis-MoO2N4 octa­hedral geometry with the hydro­tris­(3,5-dimethyl­pyrazolylborate) anion attached to the metal in an N,N′,N′′-tridentate tripodal coordination mode. Two O-bonded 4-cyano­phenolate anions and a nitrosyl cation complete the coodination of the MoII atom. Two intra­molecular C—H⋯O and one C—H⋯N hydrogen bonds help to establish the configuration of the complex mol­ecule. The crystal structure is stabilized by inter­molecular C—H⋯N and C—H⋯O hydrogen bonds

(4-tert-Butyl­pyridine)­chlorido[hydro­tris­(3,5-dimethyl­pyrazol-1-yl)borato]nitro­sylmolybdenum(I) dichloro­methane monosolvate

In the title compound, [Mo(C15H22BN6)Cl(NO)(C9H13N)]·CH2Cl2, the MoI atom adopts a distorted MoClN5 octa­hedral geometry with the hydro­tris­(3,5-dimethyl­pyrazol­yl)borate anion in an N,N′,N′′-tridentate tripodal (facial) coordination mode. A 4-tert-butyl­pyrine ligand, chloride anion and a nitrosyl cation complement the coodination of the MoI atom and an intra­molecular C—H⋯Cl hydrogen bond helps to stabilize the configuration of the complex mol­ecule. The packing is stabilized by an inter­molecular C—H⋯Cl hydrogen bond involving the complex mol­ecule and the CH2Cl2 solvent mol­ecule

1-(4-Chloro­benzo­yl)-3-cyclo­hexyl-3-methyl­thio­urea

In the title compound, C15H19ClN2OS, the dihedral angle between the amide and thio­urea fragments is 58.07 (17)°. The cyclo­hexane group adopts a chair conformation and is twisted relative to the thio­urea fragment, forming a dihedral angle of 87.32 (18)°. In the crystal, N—H⋯S hydrogen bond links the mol­ecules into chains running parallel to the a-axis direction

N-[(Piperidin-1-yl)carbothioyl]benz­amide

In the title compound, C13H16N2OS, the piperidine ring exhibit a classical chair conformation. In the crystal, the mol­ecules are linked by N—H⋯O hydrogen bonds, forming zigzag chains running parallel to the c axis

3,3′′,4,4′′-Tetra­meth­oxy-1,1′:4′,1′′-terphen­yl

The title mol­ecule, C22H22O4, is centrosymmetric with an inversion centre located at the centre of the benzene ring. The 3,4-dimeth­oxy­benzene fragment is essentially planar [maximum deviation = 0.400 (2) Å] and twisted relative to the central benzene ring, forming a dihedral angle of 21.25 (7)°. In the crystal, C—H⋯O hydrogen bonds link the mol­ecules into a two-dimensional polymeric structure lying parallel to (100)

Crosstalk improvement of polymer in glass thermo-optical multimode interference switch

A new structural design of combined variable optical attenuator (VOA) and optical switch has been proposed in this paper. The design is based on the multimode interference (MMI) architecture and it has been demonstrated for crosstalk improvement of optical switch. The device operates by manipulating thermo-optic (TO) effect that naturally existed in all optical waveguide material. By applying a polymer on glass material platform, the optimized VOA with optical attenuation of 21.52 dB has been achieved with applied power of 36.4 mW. The simulation result shows that the VOA helps to achieve significant improvements of optical switch performance particularly in crosstalk reduction up to 89.66%

1-Benzoyl-3-ethyl-3-phenyl­thio­urea

In the title compound, C16H16N2OS, the conformation at the two partially double C—N bonds of the thio­urea unit is E. The amide group is twisted relative to the thio­urea fragment, forming a dihedral angle of 62.44 (16)°, and the two phenyl rings form a dihedral angle 75.93 (18)°. In the crystal, mol­ecules are linked by N—H⋯S hydrogen bonds, forming centrosymmetric dimers

1-Benzoyl-3-[4-(3-benzoyl­thio­ureido)phen­yl]thio­urea

The mol­ecule of the title compound, C22H18N4O2S2, lies across a crystallographic inversion centre. The mol­ecule adopts a syn–anti configuration with respect to the positions of the carbonyl groups and terminal phenyl rings relative to the thione S atom across the C—N bond. There are two intra­molecular N—H⋯O and C—H⋯S hydrogen bonds within each molecule, resulting in the formation of four six-membered S(6) rings. The central and terminal rings make a dihedral angle of 13.55 (15)°. In the crystal, mol­ecules are linked by inter­molecular C—H⋯S hydrogen bonds, forming R 2 2(14) rings and resulting in zigzag chains

Propyl 2-(3-benzoyl­thio­ureido)acetate

The title compound, C13H16N2O3S, is a thio­urea derivative with benzoyl and propoxycarbonyl­methyl groups attached to the two terminal N atoms. These groups adopt trans and cis configurations, respectively, with respect to the S atom across the thio­urea C—N bonds. The compound crystallizes in the P21/c space group with Z = 8, resulting in two unique molecules in the asymmetric unit linked by C—H⋯S and C—H⋯O hydrogen bonds, forming a one-dimensional zigzag chain along the c axis

3-(3-Meth­oxy­benzo­yl)-1,1-diphenyl­thio­urea

The thiono and carbonyl groups in the title compound, C21H18N2O2S, adopt an anti disposition with respect to the central C—N bond. The diphenyl­amine rings are twisted relative to each other by a dihedral angle of 82.55 (10)°. The 3-meth­oxy­benzoyl fragment is twisted relative to one of the diphenyl­amine rings, forming a dihedral angle of 74.04 (9)°. In the crystal, pairs of inter­molecular N—H⋯S hydrogen bonds link the mol­ecules into centrosymmetric dimers, forming columns parallel to the a axis